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Magnets - Round（Magnet Type (Material)：Cobalt Magnet）
Round magnets are products used to stick items to magnetic objects made of ferrous metals. Besides sticking objects together, they are also used for applications such as magnetism testing and in parts requiring magnetic attraction. Magnets are available in types such as neodymium, ferrite, cobalt and alnico. The magnetic force of neodymium magnets is one of the strongest among the available magnet products. Neodymium magnets are used in a wide range of applications. Ferrite magnets have a weak magnetic force but relatively high retentivity. Cobalt magnets are officially known as samarium-cobalt magnets. They are known for their resistance to rust and high temperatures. Alnico magnets have superior temperature resistance properties and outstanding mechanical strength. The high retentivity of industrial magnets enables even small models to emit powerful magnetic fields. Using a magnet at temperatures above its maximum operating temperature creates the risk of weakening its magnetic force.
Configure
Specification/Dimensions
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Magnet Type (Material)
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Shape
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Round -
Ring -
Arc Type
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-
O.D.(Ø)
- 0.8
- 1
- 1.2
- 1.25
- 1.4
- 1.45
- 1.46
- 1.5
- 1.6
- 1.8
- 1.85
- 1.9
- 2
- 2.2
- 2.3
- 2.4
- 2.5
- 2.52
- 2.55
- 2.6
- 2.8
- 3
- 3.2
- 3.5
- 3.7
- 3.8
- 3.9
- 4
- 4.1
- 4.2
- 4.3
- 4.4
- 4.5
- 4.8
- 5
- 5.2
- 5.3
- 5.4
- 5.5
- 5.6
- 5.7
- 5.8
- 5.9
- 6
- 6.1
- 6.35
- 6.5
- 6.6
- 6.7
- 6.9
- 7
- 7.25
- 7.6
- 7.7
- 7.9
- 8
- 8.1
- 8.2
- 8.5
- 8.6
- 9
- 9.3
- 9.4
- 9.5
- 9.6
- 9.7
- 10
- 10.5
- 10.6
- 10.8
- 11
- 11.7
- 11.8
- 12
- 12.5
- 12.6
- 12.7
- 13
- 13.2
- 13.5
- 13.7
- 13.9
- 14
- 14.2
- 14.5
- 15
- 15.5
- 16
- 16.4
- 16.5
- 17
- 17.2
- 17.5
- 17.9
- 18
- 18.5
- 18.6
- 18.9
- 19
- 19.2
- 19.5
- 20
- 20.5
- 20.9
- 21
- 21.2
- 22
- 22.5
- 23
- 23.3
- 23.5
- 23.7
- 23.9
- 24
- 24.9
- 25
- 25.5
- 26
- 27
- 28
- 29
- 30
- 31
- 31.2
- 32
- 33.2
- 34
- 35
- 35.5
- 35.6
- 36
- 37
- 38
- 38.6
- 39
- 39.2
- 40
- 42
- 43.9
- 44
- 45
- 45.5
- 46
- 48
- 49.5
- 50
- 52
- 55
- 56
- 59
- 60
- 65
- 67
- 70
- 72
- 75
- 76
- 80
- 90
- 100
- 110
- 112
- 115
- 120
- 125
- 127
- 130
- 134
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Inner Dia.(Ø)
- 0.35
- 0.4
- 0.5
- 0.6
- 1
- 1.2
- 1.25
- 1.3
- 1.5
- 1.67
- 1.8
- 2
- 2.05
- 2.1
- 2.2
- 2.3
- 2.4
- 2.5
- 2.6
- 2.8
- 3
- 3.1
- 3.2
- 3.25
- 3.27
- 3.4
- 3.5
- 3.53
- 3.8
- 4
- 4.1
- 4.4
- 4.5
- 4.6
- 5
- 5.1
- 5.2
- 5.3
- 5.5
- 5.6
- 6
- 6.1
- 6.5
- 6.6
- 7
- 7.1
- 7.4
- 7.5
- 7.6
- 7.8
- 8
- 8.3
- 8.5
- 8.8
- 8.9
- 9
- 9.4
- 9.5
- 9.8
- 10
- 10.2
- 10.5
- 10.8
- 11
- 11.2
- 11.6
- 12
- 12.25
- 12.4
- 12.5
- 12.7
- 12.8
- 13
- 14
- 14.8
- 15
- 15.2
- 15.5
- 16
- 16.5
- 17
- 17.5
- 18
- 18.2
- 18.8
- 19
- 19.1
- 19.3
- 19.7
- 20
- 21
- 22
- 23
- 23.5
- 24
- 25
- 26
- 27
- 28
- 30
- 31
- 32
- 33
- 33.1
- 34
- 35
- 38
- 40
- 42
- 43
- 45
- 47
- 50
- 60
- 62
- 68
- 70
- 75
- 80
- 85
- 90
- 95
- 100
- 115
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Attraction Force (Range)(N)
- ~10.0
- 10.1~20.0
- 20.1~30.0
- 30.1~40.0
- 40.1~50.0
- 50.1~60.0
- 60.1~70.0
- 70.1~80.0
- 80.1~90.0
- 90.1~100.0
- 100.1~
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Attraction Force (Specific)(N)
Brand |
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Filter By |
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| CAD |
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| Days to Ship |
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- 10 items
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You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025MISUMI
[Features]A heavy-duty round magnet using neodymium and cobalt magnets. Upon opening the package, if there are magnetic objects around the product, the product may pop out and stick to them, possibly causing them to break. Please handle it with care.From: ฿ 113.75 Special Price Days to Ship: 
Same day
Same day
-
You can add up to 6 items per a category to the compare list.
Cylindrical‑Column‑Type Samarium-Cobalt Magnet【2-10 Pieces Per Package】
NEMICON
[Features]
· Temperature changes for the magnetic force are minimal, making it suitable for use in applications requiring temperature stability or in high temperatures.
· The magnet materials do not easily rust so surface treatments such as plating, etc. are not normally necessary.
· There is high demand for this magnet in compact magnetic sensors, micro switches, small relays, optical communications and laser devices.
· Particularly suited for uses requiring temperature stability.From: ฿ 864.87 Days to Ship:
8 Day(s)
8 Day(s)
-
You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Samarium-Cobalt Magnet Ring Type
MAGNA
Resistant to demagnetization at temperatures as high as 350℃ and resistant to rust, making this a perfect component of medical devices and sensors. There are some issues with respect to mechanical strength, but miniaturization and weight reduction of the product can be achieved like the neodymium product.From: ฿ 222.48 Special Price Days to Ship:
Same day
Same day
-
You can add up to 6 items per a category to the compare list.
Ring‑Shaped Samarium-Cobalt Magnet【1-10 Pieces Per Package】
NEMICON
[Features]
· Temperature changes for the magnetic force are minimal, making it suitable for use in applications requiring temperature stability or in high temperatures.
· The magnet materials do not easily rust so surface treatments such as plating, etc. are not normally necessary.
· There is high demand for this magnet in compact magnetic sensors, micro switches, small relays, optical communications and laser devices.
· They are particularly suited for uses requiring temperature stability.
· There is no attraction force measurement data available for the model numbers listed below. Thank you for your understanding.
[SCR01]From: ฿ 1,455.93 Days to Ship:
13 Day(s)
13 Day(s)
-
You can add up to 6 items per a category to the compare list.
Until 31/03/2025
Until 31/03/2025Samarium-Cobalt Magnet Round Type
MAGNA
Ideal for medical devices and sensors thanks to good coercivity at temperatures as high as 350 ℃ and corrosion resistance. Mechanical strength can pose some issues, but product miniaturization and weight reduction can be achieved, as with neodymium magnets.From: ฿ 117.45 Special Price Days to Ship:
Same day
Same day
-
You can add up to 6 items per a category to the compare list.
Samarium-Cobalt Magnet Bar Shape
MAGNA
Resistance to demagnetization at temperatures as high as 350℃, as well as resistance to rust, make this a perfect component for medical devices and sensors. There are some difficulties in terms of mechanical strength, but miniaturization and weight reduction of the product can be achieved similar to neodymium products.
[Features]
· The unprecedented strength of the neodymium magnet with polyamide coating (powder coating) greatly improves the environment‐resistant characteristics compared with conventional plated products.
· Even after a 2, 000-hour salt spray test, durability is not compromised.
· Superior durability against cracks and chips thanks to the cutting-edge coating technology.
· Suitable for various applications because mold cases are not required and the design is highly flexible.
· Optimal for products that require direct contact with the skin, such as clothing, bags, toiletries, and kitchen and household products.From: ฿ 153.53 Days to Ship:
8 Day(s)
8 Day(s)
-
You can add up to 6 items per a category to the compare list.
Samarium-Cobalt Magnet Diameter Direction Magnetizing Type
MAGNA
Ideal for medical devices and sensors thanks to good coercivity at temperatures as high as 350 ℃ and corrosion resistance. Mechanical strength can pose some issues, but product miniaturization and weight reduction can be achieved, as with neodymium magnets.From: ฿ 128.39 Days to Ship:
8 Day(s)
8 Day(s)
-
You can add up to 6 items per a category to the compare list.
Samarium-cobalt magnet ring【1-3 Pieces Per Package】
NIROKU
[Features]
· Samacoba magnets are molded sintered products mainly made of samarium and cobalt, second only to neodymium magnets in their magnetic properties.
· Although rust-resistant and resistant to high temperatures, it breaks easily and must be handled with care.From: ฿ 272.73 Days to Ship:
10 Day(s)
10 Day(s)
-
You can add up to 6 items per a category to the compare list.
Round Samarium-Cobalt Magnet【1-3 Pieces Per Package】
NIROKU
Rare-earth magnets with high magnetic energy. Can be used in high-temperature environments.
[Features]
· Circular type magnet.
· Excellent magnetic characteristics close to that of neodymium magnets.
· Outstanding temperature characteristics suitable for use in high temperatures.
· As they do not easily rust, there is normally no need for any surface treatment.
· Can be machined into the most appropriate shape for a given application.
· More expensive than other magnets.
· Low mechanical strength, and easy to chip or crack.
[Applications]
· Useful in a broad range of applications such as for sensors, communications equipment and motors, and for removing iron powder.From: ฿ 89.03 Days to Ship:
Same day
Same day
-
You can add up to 6 items per a category to the compare list.
C-Shaped Samarium-Cobalt Magnet【3-6 Pieces Per Package】
NEMICON
[Features]
· Temperature changes for the magnetic force are minimal, making it suitable for use in applications requiring temperature stability or in high temperatures.
· The magnet materials do not easily rust so surface treatments such as plating, etc. are not normally necessary.
· There is high demand for this magnet in compact magnetic sensors, micro switches, small relays, optical communications and laser devices.
· Particularly suited for uses requiring temperature stability.From: ฿ 2,552.34 Days to Ship:
13 Day(s)
13 Day(s)
| Brand |
|---|
| Product Series |
| CAD |
| From |
| Days to Ship |
| Magnet Type (Material) |
| Shape |
| O.D.(Ø) |
| Inner Dia.(Ø) |
| Attraction Force (Range)(N) |
| Attraction Force (Specific)(N) |
You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  Until 31/03/2025 | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | You can add up to 6 items per a category to the compare list.  | |
| Brand | MISUMI | NEMICON | MAGNA | NEMICON | MAGNA | MAGNA | MAGNA | NIROKU | NIROKU | NEMICON |
| Product Series | Cylindrical‑Column‑Type Samarium-Cobalt Magnet【2-10 Pieces Per Package】 | |||||||||
| CAD |
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| From | ฿ 113.75 Special Price On Sale Until 31/03/2025 | ฿ 864.87 | ฿ 222.48 Special Price On Sale Until 31/03/2025 | ฿ 1,455.93 | ฿ 117.45 Special Price On Sale Until 31/03/2025 | ฿ 153.53 | ฿ 128.39 | ฿ 272.73 | ฿ 89.03 | ฿ 2,552.34 |
| Days to Ship | Same day | 8 Day(s) | Same day | 13 Day(s) | Same day | 8 Day(s) | 8 Day(s) | 10 Day(s) | Same day | 13 Day(s) |
| Magnet Type (Material) | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet | Cobalt Magnet |
| Shape | Round | Round | Ring | Ring | Round | Round | Round | Ring | Round | Arc Type |
| O.D.(Ø) | 1 ～ 15 | 0.8 ～ 32 | 3 ～ 46 | 1.25 ～ 45.5 | 2 ～ 25 | 2.5 ～ 8 | 4.4 | 1.5 ～ 60 | 1 ～ 25 | - |
| Inner Dia.(Ø) | - | - | 1 ～ 33 | 0.35 ～ 38 | - | - | - | 0.4 ～ 33 | - | - |
| Attraction Force (Range)(N) | ~10.0 / 10.1~20.0 / 20.1~30.0 / 30.1~40.0 / 40.1~50.0 / 50.1~60.0 | ~10.0 / 10.1~20.0 / 20.1~30.0 / 30.1~40.0 / 40.1~50.0 / 60.1~70.0 / 70.1~80.0 / 90.1~100.0 | ~10.0 / 10.1~20.0 / 20.1~30.0 / 50.1~60.0 / 60.1~70.0 | ~10.0 / 10.1~20.0 / 20.1~30.0 / 30.1~40.0 / 40.1~50.0 / 60.1~70.0 / 70.1~80.0 / 100.1~ | ~10.0 / 10.1~20.0 / 30.1~40.0 / 40.1~50.0 / 60.1~70.0 | ~10.0 / 10.1~20.0 | - | ~10.0 / 10.1~20.0 / 20.1~30.0 / 30.1~40.0 / 50.1~60.0 / 60.1~70.0 / 100.1~ | ~10.0 / 10.1~20.0 / 20.1~30.0 / 30.1~40.0 / 40.1~50.0 / 50.1~60.0 / 60.1~70.0 | ~10.0 / 20.1~30.0 |
| Attraction Force (Specific)(N) | 0.04 ～ 50.67 | 0.1 ～ 91.1 | 1.4 ～ 69.6 | 0.3 ～ 168.5 | 0.7 ～ 68.6 | 1.9 ～ 17.6 | - | 0.098 ～ 284.2 | 0.098 ～ 68.6 | 8.4 ～ 22.6 |
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Related Categories to Magnets - Round
FAQ Magnets - Round
- Question: What is the strongest type of round magnet?
- Answer: The strongest type of round magnet is the neodymium magnet and they are available in a variety of shapes, including rings, cylindrical, rectangle, square and circle with countersunk hole that can be easily mounted onto a surface using a screw. These magnets are known for their extreme strength, compact size, and high coercive force, making them suitable for a wide range of applications especially in factory automation.
- Question: What are cobalt magnets known for?
- Answer: Samarium–cobalt (SmCo) magnets are widely used in various industries, including automotive, medical, industrial manufacturing and semiconductor due to their exceptional magnetic properties:
1. High strength, comparable to neodymium magnets
2. Excellent temperature stability, maintaining their magnetic properties up to about 300°C
3. High resistance to corrosion and oxidation, often not requiring surface treatments.
4. High resistance to demagnetization, making them ideal for applications where magnetic stability is critical. - Question: Can high temperatures affect magnets?
- Answer: High temperatures can significantly affect magnets. When a magnet is exposed to high temperatures the magnetic strength and field weaken. On the other hand, exposing a magnet to colder temperatures increases its magnetism. However, it's important to note that all magnets have a maximum operating temperature, and if this is exceeded, they can experience irreversible losses in performance.
For instance, standard grade neodymium magnets have a maximum operating temperature of 80 °C if you want to use the neodymium magnets over 80 °C we recommend the Heat-resistant grade of Neodymium Magnets, that have a maximum operating temperature150° Therefore, it's essential to consider the temperature effects when using magnets in various applications. - Question: What should be considered when choosing a round magnet?
- Answer: When choosing a round magnet, several factors should be considered Here are the key considerations:
1. Application and Requirements: Understand the purpose and specific needs, for example, the required magnetic strength, size, and shape.
2. Environmental and Temperature Conditions: Consider whether the magnet will be exposed to the temperature range of the application or harsh environmental conditions, for example, standard grade neodymium magnets have a maximum operating temperature of 80 °C
3. Material Type, Size, and Shape: Consider the material type (e.g. Neodymium magnets and Heat-resistant Neodymium Magnets), size, and shape that appropriate to set up in your application
4. Safety Considerations: Consider any safety concerns, especially with strong magnets, to prevent accidents or damage to equipment in the system
By carefully considering these factors, the right round magnet can be selected to meet the project's needs effectively and safely. - Question: Are there special precautions for handling strong magnets?
- Answer: When handling strong magnets, several special precautions should be observed. Here are some of the key precautions include:
1. Keep Distance and Use Caution: Magnets should be kept at a safe distance from metals, steel, and other magnets to avoid immediate impact and prevent magnets from snapping or slamming together, which can cause injuries.
2. Wear Protective Gear: It is recommended to wear eye protection, as magnets, especially neodymium and samarium cobalt, are very hard and brittle and can chip
3. Keep Away from Sensitive Devices: Magnets can affect pacemakers, implanted medical devices, electronic devices. Therefore, they should be kept away from these devices to avoid deactivation or damage
4. Dispose of Carefully: Magnets should be disposed of carefully and in accordance with the relevant guidelines to prevent any potential hazards
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